Radiator type heat exchanger



Sept. 30, 1952 AR. LINTERN RADIATOR TYPE HEAT EXCHANGER Filed April 10 1950 a U r 3 H M m M M 5 w a m w M V 1 A M Patented Sept. 30, 1952 2,612,349 "RADIATOR .TYPE HEAT EXCHANGER 'Alfred "RI Lintern; Grosse. Pointe. Farms, Mich., "assignor. to.-A.:R.';Lintern.;Inc.; Detroit, Mich., a

; .corporationof Michigan Application April 10, 1950,'SeriaI No; 155,097

\ 7 Claims.

This invention generally -relates "to vehicular circulating core hot water-space heaters-and particularly pertains t?) a new, novel and inventive water-level tube, air bleeder valvegand water control valve therefor.

A vehicular hot waterspace'heater 'gives' best *results' when the core is maintained full of heat- *ing liquid with all air 'evacuate'd 'and' when the "flow ofliquid in the coreis regulatable tofacilitate controlling heat production.

-It' is,therefore,' the primary object of the invention to provide means for positively insuring l the i'proper level" of heating liquid in the heater more, I? evacuating air from "the heater'core, and controlling thefiow of heating liquid in the core.

object of the invention is to provide a com- 'bined air-bleeder valve;water-control -valve, and liquid level tube;=for-avehicular hot water space *heater.

-Anob'ject of the invention is'to provide anair- *bleeder valve, awater-control valve and a liquid level tube for a vehicular hot waterspace heater which will insure the core being i-llled-with water regardless of a low water level in thev'ehicle cooliing 'system.

objectof the invention is to provide an inexpensive combined 1 water-control" valve, airhleeder-valve, andliquid-level' tube.

object of the invention is to, provide a simple, easily manipulated combined water-control valve and air-bleeder valve.

An obj ectof' the inventionis-to provide awater :levelktube equippediwith: amenlargediflared end receive water in. acascadingturbulent .statein vsufficient volumetoaequal .the capacityxofi the g,

:body of the tube.

' An. object of the invention i-istoutilizetthmenslarged flared; end of xthe water. .level" tube as; a

avalve seat.

. .An object of i the :invention'; is .ItO'lDIOVidG a :(stopper :type) 'valvewseatable in: the valve seat threaded 1 is a side elevational viewof the invention with parts broken "away to better illustrate "the internal construction therof.

'of air-bleeder valve.

Referring now. to the drawingswherein likenumerals. refer to like and corresponding iparts "throughout the several views, :the-airableeder valve, liquid-control valve, andcore. liquid-level "tube disclosed" therein to 'illustrate the invention "comprisesa core l0, ducts H in the core l0, 'heat "radiating fins l2 on the ducts ,perforateplates l3 sealably receiving the ends of: the ducts" H in the perforations thereof, a can Msoldered to one plate I3 closing one end of the core I0 providing a liquid circulation chamber T: at: one :end' of the core [0, acanl5 soldered to the other plate [3 at the other end of the core 'lllprovidinga liquid -chamberat the other end of the core ma separator l6 soldered to the can l5-dividing -gits chamber into a liquid intake chamber A: and a "liquid outlet chamberB, a sealingv strip'l 'l-seali-ng the separator 5 relative to the adjacent plate [3,

a liquidinlet pipe -l8-soldered to the can [Meading to the intake ch-ambenA thereof, a liquid outlet pipe [9 soldered to'the can 'l-5 leading'from the outlet chamber B thereof, a tube ZUdisposed in the outlet chamber :13 soldered to theoutlet pipe l9 projecting upwardly toa' point approximately at theiop-Of the core 10, a.flaredaend 2l=on "the'tube'zfl providing a valve seat 2l-A,- a valve stopper-22 havingan aperturetherethrough sealably seatable'on the valveseat 2 l, avalve operating' and'air evacuating tube '23-'leadingiinto the 'can [5 connectedto the valve '2 2- communicating with the chamber B via the aperture in the-valve 22, agland 'MsealabIy and movably supporting the operating and air evacuating tube 23= relative to" the-can I5, an air valve cap 425 threaded 'on the exterior end of the tube 23 'having'air' vent 26 therein. An optional type of air-bleedervalve compr-ises a valve actuating 'handle 28von the nicating with the tube 23, a valve seatssqcket-" 3ll in the handle 28, a valve 3! threaded in the "socket30 adapted-to vent orse'al the atmosphere'end of the tube 23=and avent' 33 the-tube23.

The liquidenters' the heater at the intakepipe I8, flows through the inlet chamber A, enters the ducts II leading from the chamber A and flows intothe transfer chamber T, enters the ducts leading to the outlet chamber B, enters the tube 20 in the inlet chamber B, and enters the outlet pipe I9. It can be seen that the liquid flows in one direction from the can I5 to the can I4 and in a reverse direction from the can I4 back to the can I5 preventing short circuiting of the flow of the heating liquid and facilitating a double pass of heating liquid through the core II]. It can also be seen that no liquid can leave the heater via the outlet pipe I9 unless and until the liquid in the heater is above the top end of the liquid level tube 20. The heater is easily filled to this level by gravity or by the engine water pump when the valve stopper 22 is off the seat 2 I -A with the air valve 25 open allowing escape of the air head in the core I and cans I4 and I5.

. When the valves 25 and 22 are open allowing air to bleed from the heater, the heating liquid enters the heater at the intake pipe I8 and rises in the intake chamber A of th can I5, travels through the ducts II leading from the chamber A to the chamber T of the can I4, travels through the. ducts II leading from the chamber T of the can I4 to the outlet chamber B of the can I and the liquid continues to rise in the chambers A, T and B until the liquid achieves a level in the heator above the upper end of the liquid level tube 20,

at which point the liquid is free to spill into the tube 20 and enter the outlet pipe I9 from which the liquid is conducted to the cooling system of the engine by suitable ducts. When. all the air is evacuated from the heater, the air valve 25 is manually closed; when less heat than the maximum is required the valve 22 can be manually positioned adjacent the valve seat 2| constricting the flow of liquid in the core to the desired rate; and when no heat is required, the valve stopper 22 is manually seatable on the seat 2I entirely preventing flow of liquid in heater. When the valve 22 is off the seat 2I-A, air can be bled from the heater via the orifice in the valve 22, the tube 23, and the valve cap 25 or via the optional valve 3|.

The heater can be installed above the liquid level of the engine as the water pump on the eng-ine can fill the heater to its proper level regardless of the liquid level of the cooling system of the engine. This is facilitated by the fact that the liquid level tube 20 of the heater prevents the liquid in the heater running out of the outlet pipe I9 and the water pump on the engine prevents the liquid in the heater from running out the inlet pipe I8. Thus the heater remains full of liquid above the liquid level of the engine whether the engine is running or not and due to the fact that the head of liquid in the heater is on the pump, no liquid head is operative on the air vented portion of the engine cooling system so that none of the liquid in the heater will run out the overflow pipe of the vehicle radiator. Installation of the heater is facilitated by the fact that the inlet pipe I8 and the outlet pipe I9 are positioned on the same end of the heater and at the same level.

In operation the operator can regulate the flow of liquid through the heater by adjusting the valve stopper 22 relative to the valve seat 2I and in this way he controls the amount of heated liquid delivered to the heater whichultimately controls the amount of heat radiated, by the heater as the heater is entirely dependent for'heat supply on the amount of heated liquid received.

' tirely prohibit flow. of liquid into said liquid" 4 The operator can also easily keep the heater full of liquid by bleeding the trapped air therefrom by unscrewing the cap 25 on the air vent tube 23 or by unscrewing the optional valve 3 I.

In that the air bleeder valve is disposed on the liquid control valve operating stem 23, the operator is constantly reminded to bleed the air from the heater when he operates the liquid control valve stopper 22.

The flared end 2I on the liquid level outlet tube 20 is very important in that it not only provides a valve seat 2I-A but also provides an enlarged receiving end for the tube 20 which is capable of permitting a quantity of liquid into the tube 20 commensurate with the transmission capacity of. the tube 20; the flared end 2I provides an enlarged spillway shaped to conform to the annular cascade of liquid spilling into the tube 29 thereby eliminating air pockets and turbulence at the lip and eliminating intersectingangular convergence of the annular spill of the liquid. Rather the flared end 2I insures a substantially parallelconvergence of the annular spillinto the tube 20 without turbulence and air pockets. In other words, the flared end 2| on the tube 20 smoothly leads annular spill ,of water intov the tube 20 without turbulence or pockets in ample quantity to completely utilize the transmission capacity of the tube 20. v

The direction of air circulationthrough the core ID is preferably in the direction. indicated by the arrow in Fig. 4 with the airflrst circulating through the cooler half of the core and then passing through the hotter half of the core and in this manner the heat of the coreis: more ,efliciently transferred to the air and the airemerge at a higher temperature than otherwise. j 1

The hollow water-valve operating tube 23 air vent 33 vents the trapped air in core II) in the event the valve 22 is seated on the valve seat .2IA while the tube 23 and apertured valve 22 vents the trapped air in the event the vent 33-is in the area of the gland 24. v V

Although but a single embodiment-pfzthe invention has been shown and described-indetail, it is obvious that many changes may bemade in the size, shape, detail and arrangements of'the elements of the invention within the scope of the appended claims. I v, I

I claim:

1. A vehicular hot water space heatercomprising a horizontal core, a can on one end of said core housing a transfer chamber communicating with the entire area of said core, a canon the other end of said core housing an intake; chamber communicating with half the area of said core and an outlet chamber communicating with the other half of the area of said core, an inlet pipe communicating with said inlet chamber, an outlet pipe communicating with said outlet chamber, a liquid level tube disposed in said outlet chamber connected to said outlet pipe extending upwardly from said outlet pipe to a point adjacent the top of said outlet chamber whereby'liquid in the heater circulates fromsaid inlet pipe-"to said outlet pipe by traveling: via said inlet chamber, half said core to said'transfer chamber, half "said core to said outlet chamber, and said "liquid level tube to said outlet pipe, a valve seat*on.the upper end of said liquid level tube, and a valve seatable on said valveseat operable to permit unrestricted flow of liquid intosaid' liquid level tube,regulate flow ofliquid into said liquid.level"tube,.or.en-

level tube. :1

:gerezcrc 2; A vehicular 'hbt' water spacemeater comprisliquid level tube disposed in said outlet chamber connected to said'outlet pipe extending upwardly from said outlet pipe to a point adjacent the top of said outlet-chamber wherebyliquid in the he'ater circulates fromsaidinlet pipeto-saidouta,

'o'f said liquid level tube, a 'valv'e seatable on said valve seat'operable to permit unrestricted flow of "liquid into said liquid level tube, regulate flow oi liquid 'into'said liquid level'tube, or entirely prohibit the flow of liquid into said liquid level tube; said valve having anaperture constituting -an-air vent, a hollow valveactuating tube communicating with said vent leading to atmosphere, and an air release valve normally closing said valve actuating tube.

3. A vehicular hot water space heater comprising a horizontal core, a can on one end of said core'housing a transfer" chamber communicating "with theentire area of said core, a canon the other end of saidcore'liou'sing'an intake chamber communicating with half the area of said core :I

and an outlet chamber communicating with the other half of the area of said core, aninlet pipe communicating with said inlet chamber, an outlet pipe communicating with said outlet chamber, a liquid level tube disposed in said outlet chamber connected to said outlet pipe extending upwardly from said outlet pipe to a point adjacent the top of said outlet chamber whereby liquid in the heater circulates from said inlet pipe to said outlet pipe by traveling via said inlet chamber, half said core to said transfer chamber, half said core to said outlet chamber, and said liquid level tube to saidoutlet pipe, a valve seat on the upper end of said liquid level tube, a valve seatable on said valve seat operable to permit unrestricted flow of liquid into said liquid level tube, regulate flow of liquid into said liquid level tube, or entirely prohibit the flow of liquid into said liquid level tube; said valve having an aperture constituting an air vent, a hollow valve actuating tube communieating with said vent leading to atmosphere, and an air release valve normally closing said valve actuating tube; said inlet pipe and said outlet pipe being on the same end-of said core and at the same level.

4. A vehicular hot water space heater comprising horizontal heat liberating ducts, vertical heat radiating fins on said ducts, perforate face plates soldered to said ducts with the ducts disposed in the perforations of said plates at eitherend thereof, an imperforate first can soldered to one said face plate housing a transfer chamber communieating with all said ducts at one end of said ducts, a second can soldered to the other said plate housing a chamber communicating with all said ducts at the other end of said ducts, said second can having two apertures in its side wall at the same level, a separator disposed in said second can soldered thereto dividing the chamber into an intake chamber communicating with half said ducts and ducts communicating with -said' outlet "chamber.

one-"of the apertures and an"- euuetehambercom niunicatilig with the other half of said iductsian'd the' other aperture, an intake (pipe dis'posed m the aper'ture i of said' intake chamber for 1 supplying hot :water to 'said intake chamber from the' vehicle cooling'system, whereby water supplied enters said intake chamber, travels through said ducts communicating therewith -to said transfer chamber, through said transfer 'ohamber to -said and through said ducts to saidoutlet eha r, an outlet pipe disposed in the 'ap'ertu're o 's'aid outlet chamber for transmitting "water 'baok' to the vehicleengine' cooling system,".a'-water' lvel tube connected to said outlet pipe leadiii'g 'upwardly 'fr'om said-outlet pipe 'to al'pointiadjaeeht the top of said outlet chamber whereby the water "level in said c'a'ns and ducts. m ustj 'be above the "end of "'s'aid tub'e before "water canbe-transinittd tossaid outlet'pipe, a valve seat on"-'-"sai' ater level'tubeand a valve stopper seatable-"on s'aiid seat adapted to allow unrestricted watfcirculation in said cans and'ducts, to completely re'strict water circulatio'n said cans and ducts; and to throttlewater circulation in said can-and ducts. 5. "A Vehicular hotwater spaceheater-oomprising horizontal heat liberating ductsfvertical heat radiatingfins on said ducts, perforate face plates soldered tosaid ducts with the ductsdis'posed in the per-forations of said 'pl'ates at eitherend thereof, an" imperforate first cansoldered -to one saidface plate housing atransfer chamber 'ommuhicatirigwith all said ducts atonee'nd of said ducts, a second can soldered 5 tothe dther said platehousinga chamber communicatin -with an said ducts at the other end of said ducts, said second can having two apertures in its side wall at the same level, a separator disposed in said second can soldered thereto dividing the chamber into an intake chamber communicating with half said ducts and one of the apertures and an outlet chamber communicating with the other half of said ducts and the other aperture, an intake pipe disposed in the aperture of said intake chamber for supplying hot water to said intake chamber from the vehicle cooling system, whereby water sup lied enters said intake chamber, travels through said ducts communicating therewith to said transfer chamber, through said transfer chamber to said ducts communicating with said outlet chamber, and through said ducts to said outlet chamber; an outlet pipe disposed in the aperture of said outlet chamber for transmitting water back to the vehicle engine cooling system, a water level tube connected to said outlet pipe leading upwardly from said outlet pipe to a point adjacent the top of said outlet; chamber whereby the waterlevel'in said cans andducts must be above the end of said tube before water can be transmitted to said outlet pipe, a valve seat on said water level tube, a valve stopper seatable on saidseat adapted to allow unrestricted water circulation in said cans and ducts, to completely restrict water circulation in said cans and ducts, and to throttle water circulation in said cans and ducts; said valve stopper having an aperture therein constituting an air vent, a hol-' municatinepwith the entire core end, a divided canon the other end of said corehaving a first -,and second chamber each communicating with halfv of said core, a hot water intake pipe on the -flrst chamber of said divided can, ahot water outlet pipe on the second chamber of said divided can, a water level tube in the second chamber connected to. said outlet pipe with itsopen end positioned approximately at the top of said core whereby said core is substantially full of water whensaid water level tube transmits water to isaidoutlet pipe, a valve seat on said water level tube, and a, water valve seatable on said seat adapted to throttle water flow, permit unrestricted water flow, or to entirely prevent water ,fiowinto. said outlet pipe via said water level tube.

.7. Aehot water space heater for a vehiclecomprising a core, a can on one end of said core communicating with the entire core end, a

divided can on the other end of said core having a first chamber and a second chamber each communicating with substantially half said core. a hot water intake pipe connected into the first chamber of said divided can,- a hot water outlet pipe connected to the second chamber of said divided can, a water level tube in the second chamber connected to said outlet pipe with its mit unrestricted water flow, or to entirely prevent '8 water flow into said outlet pipe via said water level tube, a hollow water valve stopper operating rod operably connected to said water valve stopper having an aperture communicating with the interior of the heater and disposed with its exterior end communicating with atomsphere providing an air vent for the interior of the heater for bleeding trapped air in the heater. and an openable, normally closed, air valve sealing the exterior end of said hollow water valve operating rod.

,- ALFRED R. LINTERN.

REFERENCES CITED Thefollowing references are of record in the file of this patenta UNITED STATES PATENT K Number v Name Date l 487,901 Blackmore Dec. 13, 1892 828,961 Diehl Dec. 18, 1906 1,547,861 Davis July 28, 1925 1,668,491 Caesar May 1, 1928 1,717,770 Grace 2. Junel8, 1929 1,843,295 Nichols Feb. 2, 1932 2,032,660 Kagi Mar. 3, 1936 I 2,118,263 Myerhoefer May 24, 1938 2,164,628 Sibley July 4, 1939 2,444,958 Smith July 13, 1948 y FOREIGN PATENTS Number Country Date 506,012 Great Britain May 22, 1939 343,713

France, Aug. 13, 1904 

